Collet chuck for a chucking fixture insertable into a machine-tool spindle

摘要

A collet chuck (2) for a chucking fixture insertable into a machine-tool spindle (1) has a collet-chuck holder (3) which at its one end (3a) carries a plurality of spring-loaded collet-chuck levers (4) and at its other end (3b) is provided with an internal thread (6) for the screwing-in of the free end of a tension rod (8). A locking screw (9) can be screwed in the internal thread (6) and has a hexagon-socket profile (10) for actuation. Arranged rotatably and axially displaceably in a central bore (11) provided in the collet-chuck holder (3) between its one end (3a) and the internal thread (6) is a cooling-lubricant transfer tube (12) which extends through the locking screw (9) and which projects axially with its free end (12a) beyond the one end (3a) of the collet-chuck holder (3). The transfer tube (12) has, in the region of the locking screw (9), an outer profile (17) which engages into the hexagon-socket profile (10) fixedly in terms of rotation, but axially displaceably, and is provided at the free end (12a) with a hexagon-socket profile (16). <IMAGE>